Button-hole-barring machine



(No Model.) 3 Sheets-Sheet 1.

H. M. ESSINGTON. BUTTON HOLE EARRING MACHINE.

No. 432,795. c Patented July 22, 1890.

lllllllllllll WlTNESSES:

(No Model.) a Sheets-Sheet 2.

H. M. ESSINGTON.

BUTTON HOLE EARRING MACHINE.

No. 432,795. Patented July 22, 1890.

Mm ill aa agmmzjif E El Jlilfi I II "I WITNESSES:

(No Model.) a Sheets-Sheet a.

H. M. ESSINGTON. BUTTON HOLE EARRING- MACHINE.

No. 432,795. Patented July 22, 1890).

Fig.6.

MHEYS,

WITNESSES.- g film 5 0 74 t L -97: QQW BY UNITED STATES PATENT FFICE.

HARRY M. ESSINGTON, OF CAMDEN, NEXV JERSEY, ASSIGNOR TO THE ESSING- TONBUTTON HOLE FINISHING AND MACHINE COMPANY, OF NEXV JERSEY.

SPECIFICATION forming part of Letters Patent No. 432,795, dated July 22,1890.

Application filed November 21, 1887. Renewed September 24, 1889. Serial110,324,886. (N0 model.)

To all whom it may concern:

I Be it known that 1, HARRY M. ESSINGTON, a citizen of the UnitedStates, residing in the city and county of Camden, State of New Jersey,have invented a new and useful Improvement in Button Hole -FinishingMachines, which improvement is fully set forth in the followingspecification and accompanying drawings.

My invention consists of improvements in a button-hole-finishing machineadapted to form a stitch at the end of a button-hole and an overlyingrow of stitches over said stitch at a right angle thereto.

Figure 1 represents a side elevation of a button-hole-linishing machineembodying my invention. Fig. 2 represents a partial top or plan view anda partial horizontal section thereof. Fig. 3 represents a partial endview and partial vertical section thereof in line 0a 00, Fig. 1. Fig. arepresents a view of a detached portion, including the clutch, switchcam, and adjacent parts. Fig. 5 represents a vertical section of adetached portion in line y y, Fig. 2.

Similar letters of reference indicate correspon ding parts in theseveral figures.

A represents the driving-shaft of the needle-bar, which is mounted onthe arm B and carrying the clutch C, the switch-cam pulley D, andeccentric E. In the switch-cam of the pulley D is a cam-follower F, towhich is pivoted the lever G, the latter having its axis II on the sideof the vertical limb B of the arm B. Encircling the eccentric E is theyoke J of a lever K, the latter being pivoted to the side of the limb Bat a right angle to the lever G and carrying at its lower end thepivoted pawl L, whose point engages with the sliding rack-bar M, whichis supported on the table Not the machine, said rack-bar having on itsside the projection P, which is adapted to bear against the side of abar Q, which is pivoted to the table N, and also engage with a shoulderR on the inner side of said bar. Secured to the lever K is a spring Lbearing upon the pawl L, so as to keep the same in engagement with therack-bar M during the movement of the said bar by the said pawl. To theend of the bar Q, opposite to its pivot, is pivoted a link S, to whichare pivoted the parallel arms T U V, which extend in the longitudinaldirection of the machine above the table N. To said link S is alsopivoted the vertical lever WV, whose axis is at the top of the arm B,said lever being so disposed that it may be engaged by the shoulder Xonthe horizontal sliding bar Y, which is guided on the arm B and hasonefend bent to engage with the loose-pulley of the clutch O. Engagingwith the barY is an elbow-lever Z, which is pivoted to the limb B of thearm B and connected with a foot-treadle, whereby said slide may be movedand the clutch C locked for starting the machine. Engaging with the barY is a vertical lever A, which has its axis on limb B and is pivoted tothe horizontal link 0, the latter being pivoted to the lower end of thelever Gr. Pivoted to the bar Y is a lever D, whose axis is on the limbB, and has its lower end so disposed that it is adjacent to the heel endof the pawl L, said heel being beveled, whereby when said lever D isoperated in one direction by the sliding bar Y the lever D comes incontact with said heel, so that the pawl is raised clear of the rack-barM. To the lower end of the lever G are pivoted the parallel rods E F,which extend in the longitudinal direction of the machine, the rod Ehaving collars G, which occupy positions on opposite sides of theelbowlever 1-1. The rod F has also collars J, which occupy positions onopposite sides of the lever KI, said levers H K being pivoted to thetable LT. The arm T has a pin L which projects under the rod E, and thearm U has a pin M which projects under the rod F. The

ively, which rest at times on the block N and block P, respectively,said blocks being secured to the table N, and having their upper facesbeveled, as will be seen in Fig. 1. forward end of the arm V rests on ablock Q, which is secured to the table N, and having its upper facebeveled, said end of thearm being beneath the dogs R, which are hung onthe upper end of the rocking arm S, the

ends of the arms T U have feet a I), respectlatter being mounted on theside of the table are adapted to engage with a rack-bar V, secured tothe slide W, which is fitted between guides Y on the table N, said slidecarrying guides Z for a slide A it being noticed that the guides are ata right angle to each other, whereby the slides are permitted to move indirections at a right angle to each other. The elbow-lever H isconnected with the slide XV by means of a linlr B and the lever K isconnected with the slide A by means of a link 0 To the slide A isconnected the clamping mechanism for the fabric containing thebutton-hole, and consisting of the base-plate D which rests on the tableN, and feet on. said plate D between which plate and feet the fabric isclamped, the plate having an opening adjacentto the throat c in thetable for the passage of the needle, it being observed that the sewingis accomplished as usual in sewing-machines. The feet E are attached tothe ends of springs or springplates F which are secured to the slide Aand adapted to be pressed by the action of a rotary cam or eccentrichead G which is mounted on ears H connected with the slide A andprovided with a handle, whereby by rotating said head in one directionthe springs F are pressed downwardly, thus forcing the feet E againstthe plate D causing the fabric to be held in a reliable manner. Byrotating the head in the opposite direction the springs, andconsequently the feet E are released and the fabric may be removed.

H represents a guide which enters the button-hole and prevents shiftingthereof, said guide consisting of the fiat strip J which rises from thebase-plate D and the pin K which rises from a plate L the latter beingplaced on the plate D and having a slot cl, through which passes a screwM which is fitted to the plate D whereby the plate L may be moved andthe strip J and pin K set nearer to or farther from each other, thusadjusting the guide to button-holes of different lengths. A spring N isconnected with the table N and rack-bar M for restoring the latter toits normal position. The bar M is prevented from returning during thesuccessive stitches, owing to the friction between the projection P andthe bar Q, due to the action of the spring R on the lever W and the linkS being greater than the power of the spring N Springs P are connectedwith thesliding bar Y and the arm B for restoring said bar to its normalposition. A spring R is connected with the bar Y and leverW for "allyadjusted as to its position relatively to the rack-bar M, therebyincreasing or decreasing the throw of the said rack-bar, and thusregulating its movements, and consequently those of the slide XV.

The connecting-rod T is formed in sections, the ends of the middlesection thereof having right and left screw-threads, and enterin gcorresponding threaded ends of socketpieces T one of which pieces isattached to the rocking arm S, and the other piece to the crank of theshaft U, it being evident that by rotating said middle section thelength of the rod may be adjusted in order to ad- Vance or set back thedogs R, and thus cause the latter to take more or less teeth of therack-bar V, and so adjust the travel of the slide W in forming thesecond row of stitches. The dogs Rare held in contact with the rackbar Vby means of springs U as will be seen in Fig. 3.

The operation is as follows: The parts being in position shown in thedrawings,the rod E having its collars G engaged with its lever H, andthe rod F having collars J raised clear of the lever K. The armViselevated by means of the block Q, whereby the dogs R are disengaged fromthe rack-bar V of the slide XV. The lever Z is depressed by the treadle,whereby the bar Y is moved, thus coupling the clutch and causing theoperation of the cam-follower F and oscillations of the lever G, wherebythe rod E operates the lever H, and transverse motions are imparted tothe slide W. As the slide A is carried by said slide W and the clampingmechanism is attached to the slide A the fabric is carried in transversedirections, whereby a row of stitches is formed on the fabric at the endof the button-hole -at a right angle thereto. The oscillating lever Kcauses the pawl or dog L to engage tooth by tooth of the rack-bar M,whereby thelatter is advanced. When the projection P of the rack-barclears the shoulder R of the lever Q, the latter is no longer controlledby the rack-bar, and said lever, under the action of the spring Rconnected with the lever TV, is immediately moved toward the needle endof the machine, and the arms T U are advanced, so that the arm T ascendsthe block N, and its pin L thereby raises the rod E clear of the leverH. The arm U, however, descends its block P, whereby the pin M permitsthe rod F to lower, thus placing the collar J in position to engage withthe lever K. As the said lever now receives motion from the rod F, theslide A is reciprocated and the fabric is moved in a longitudinaldirection of the machine backward and forward, it being noticed that thelever H is atrest. As the rod V is advanced with the arms T U, theforward end of said rod V descends the block Q, thus allowing the dogsto drop and engage with the rack-bar V. As the crank-shaft U rocks andswinging motions are communicated to the arm S, the

IIO

dogs R move the rack-bar V tooth by tooth,

and consequently moving the slide W in the transverse direction of themachine, while the slide A continues its motions in a longitudinaldirection to the machine, and thus an overlying row of stitches isformed on the previously-formed row of stitches at a right anglethereto, thus finishing the button-hole. The bar Y has a pin or lug Vwhereby it may engage with the lever A, as has been stated, said leverbeing connected by thelink C with the lever G and oscillating with thelatter. Now when the cam-follower is in the side of the switch-camtoward the needle the upper end of the lever A abuts against the pin Vand thereby prevents the motion of the bar Y toward the clutch. Vhen theca ml'ollower is in the opposite side of the switchcam, the upper end ofthe lever A is removed from the pin V whereby said bar is not controlledby said lever A, and it moves to its full extent, thus uncoupling theclutch. The shoulder W on the bar Y drops into therecess X of the saidclutch. The lever W is also moved, thus withdrawing the arms T U V, theeffect of which is to lower the rod E, raise the rod F, and also operatethe arm V and raise the dogs R clear of the rack-bar V. Simultaneouslytherewith the bar Y uncouples the clutch C, as has been stated, thusstopping the machine. The lever WV also moves the lever Q, in adirection from the rack-bar M, whereby the projection P is freed fromengagement with the shoulder R of the bar Q, and the said bar Q, beingno longer held against the said projection the power of the spring Nreturns the bar M to its first position.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A clamp for a button-hole having a guide to enter the button-hole,consisting of an uprightstrip attached to the base-plate of said clamp,and an upright pin attached to another plate, said plates being adjustably connected, whereby the guide is adjustable in length,substantially as described.

2. In a button-hole sewing-machine, slides having a cloth-guide thereon,mechanism connected therewith and with the driving-shaft, substantiallyas described, for alternately reciprocating said slides, thetransversely-moving rack-bar l\.'[ with spring N for controlling theoperation of said reciprocating mechanism, and an adjustable bar or stopfor limiting the play of said rack-bar, said parts being combinedsubstantially as described.

3. In a button-hole sewinganachine, a guide for the button-hole,consisting of the baseplate D ,with thefiat strip J 2 rising therefrom,the slotted plate L on the plate D and having the pin K risingtherefrom, and the screw M passing through slot of said plate Uandfitting into the plate D said parts being combined substantially as andfor the purpose set forth.

4. In a button-hole sewing-machine, the lcver K, with a pawl at thelower end, the table N, the transverse rack-barM, operated by theoscillations of said lever and pawl, and having the projection P, thepivoted lever or bar Q, with shoulder R, the link S, pivoted to the barQ, parallel arms pivoted to said link and provided wit-h pins, blockssecured to the table and adapted to engage said pins, reciprocating rodswith collars, slides having a cloth-guide and connected with leverspivoted to the table and operated by the movement of said reciprocatingrods, and a bar adapted to be adj ustably secured to said table havingits end abutting against the end of said rackbar at the commencement ofits forward move ment, said parts being combined substantially as andfor the purpose described.

5. I11 a button-hole sewing-machine, the slideA ,havinga clampin gdeviceand abuttonhole guide thereon, mechanism, substantially as described,for reciprocating the same, the slide W, movable at right angles to saidslide A and provided with a rack-bar, the rocking arm S, havingthe pawlsR on the upper end thereof, the rod T, connected to said arm S, therockshaft U, having a crank-arm pivotally attached to said rod T, thebeveled face-block Q, and the rod V, with mechanism, substantially asdescribed, for reciprocating the same, the said rod V being adapted toengage the said pawl R, said parts being combined substantially as andfor the purpose set forth.

6. In a button-hole sewing-machine, the reciprocating-slide A incombination with the table N, having the throat c therein, the baseplateD with opening adjacent to the throat c, and provided with the feet Eand the screw M the spring-plates F attached attheir ends to the feet Eand to the slide A a rotary cam mounted in ears on the slide A the plateL with slot (1, and having the pin K and the strips J rising from thebase-plate D substantially as described.

7. In a button-hole sewing-machine, the reciprocating slides A and IV,the latter having the rack-bar V, a driving-shaft, and mechanism,substantially as described, connected therewith for operating saidslides, the pivoted bar Q in contact with said slides-operatingmechanism, the link S, pivoted to said bar and having pivotallyconnected therewith the parallel arms T U V, extending longitudinally ofthe machine, the clutch mechanism O, and a loose pulley on saiddrivingshaft, the sliding bar Y, with the shoulder X thereon, and an endadapted to engage the said clutch, the vertical lever IV, pivoted to thesaid link S and adapted to engage said shoulder X, a rocking arm havingpawls engaging said rack-bar V, and mechanism, substantially asdescribed and connected therewith, for oscillating said rocking arm, thesaid arm V being adapted to-raise the said pawls B, said parts beingcombined substantially as described.

HARRY M. ESSINGTON. Witnesses:

JOHN A. WIEnERsHEIM, A. P. JENNINGS.

